Tool



March 26, 1940. c R L I I 2,194,494

TOOL

Original Filed Dec. 16, 1957 Patented Mar. 26, .1940

\ UNITE-D STATES'P'ATENT OFFICE rooL Charles E. Carroll, Toledo, Ohio,assignorof one- H half to Herman A. KruegenToledo, Ohio ApplicationDecember 16, 1937, Serial No. 180,055

RenewedFebruary 5, 1940 I 2 Claims.

This invention relates to quickly setting, adjustin'g and mountingtools.

This invention has utility when incorporated in hack saws for quicklysetting, adjustin and tensioning the blade from the grip.

Referring to the drawing:

Fig. l is a side elevation of an embodiment of the invention in a hacksaw;

Fig. 2 is a fragmentary side elevation of the saw'mounting connectionsshifted 90 from the position in Fig. l;

Fig. 3 is a fragmentary view of the blade mounting features of Fig. 1,showing the handle portions rocket}. to slack off for the hack sawblade;

Fig. 4 is a bottom plan view adjacent thegrip different 90 positions, inthereby locating, on

the opposite side of this tube 3, pin 1 to provide detachable connectionfor hack saw blade 8.

Longer arm 9 of this L-frame section I at its terminus has depending lugIll. carrying cross pin I I. Spanning this L-section arm 9 is relativelytelescopic frame section |2 having channel !3 embracing this arm 9 ofthe section I. As telescoping over this arm. 9, the section 2 terminallyhas pair of lugs I4 with closure pin I5 therebetween as a guide uponwhich the arm 9 may ride in the location of this cross pin II in desirednotches I6 of this section I2 according to the length or approximatelength "of the hack saw blade 8, This telescopic section I2 has gripportion I! therefrom to pivot pin It mounting oompanion grip portion I9.This grip portion I9 has pivot pin 2|]. from which extends link 2| topivot pin 22 in angle lever 23 having fulcrum 24 between depending arms25 from this telescopic section I2. This lever arm 23 is accordinglyswingable on the fulcrum 2,6 as. shielded by the side walls ofthis arm.I2.

This angle lever'23 beyond the fulcrum 24 has protruding arm portion 28terminating at right angles thereto in pairoi parallel arms 21 rigidtherewith. These parallel arms as away from the lever arm 26 carrypivot-pin 28 mounting rockable nut 29 carrying threaded stem 30 from Iwith the grip portion away from the grip portion Il, there is a degree 1rectangular block 3|. This-block has pin 32 as a hacksaw engaging pincompanion to the pin I at the connection 6. This hack saw bladeconnection 3I, as rectangular in form, may be rocked on the pin28 as afulcrum clear of the 5 pair of parallel arms 21, thereby to permit ro-"tation of the fitting 3| as to the pin 28. This rotation may beeffected from the blade 8 as released from the pin 1 to thereby effectnicety of adjustment beyond the selected length adjust-, ment from thenotch pairs I6.

At. such selected position, locking of the con- "'n'ection 3| betweenthe arms 2'! is a holding of this connection in the thrown position re;sponding to that position effected by the notches- 15 4 cooperating withthe cross pin or lugs 5 in the connection 6. At such adjusted position,'say I9 rocked on the pivot |8 1 of slack to permit this readyadjustment for the blade 8. Accordingly, as the operator grasps the gripportions I'l, I9, to swing such toward each other into grip completingposition, the link pair 2| on opposite sides of the angle lever 23thrust such angle lever into the telescopic sec-' tion I2, with arocking the remote arm 26 on the fulcrum 24 to shift the connection 3|away from the connection 6, thereby tensio-ning the hack saw blade fordesired working operation.

These features of ready blade mounting and 30 length selection for theblade connections, with ready self-locking adjustment at the connector.swivel 3|, have supplemental thereto the grip tensioning for quick,effective holding; while the release for replacement of a blade islikewise quickly effected by merely swinging the handle portion on thepivot I8 away from the handleportion ll'. This gives an effective hacksaw assembly unit for this tool.

What is claimed and it is desired to secure by 40 Letters Patent is:

l. A saw frame for holding. a blade of the hacksaw type, said framecomprising .an L-section, a relatively telescopic adjustable framesection embodying a first grip" portion rigid with said adjustable framesection and an oifset toward the blade from the telescopic section, and

' a second grip portion pivoted at one end remote from the framesection. on, and relatively movable to house, the first grip portion andhaving in line with the blade, the other toward the grip and connectedby a link to said second grip portion at a point remote from the pivotof the latter and normally locked in blade tensioning position by saidgrip portion and the link being held past dead center position when thefirst grip portion is housed Within said second grip portion, saidL-section having a companion blade connection to form a bow exterior-1yof which the grip'portions are located, and a blade between theconnections and normally tensions between said frame sections.

2. A saw frame for holding a blade of the from said adjustable framesection and a second v grip portion pivoted to the first grip'portionnat' the end of the latter remote from the adjustable section, alink from an intermediate pointon grip portion upon clasping ofbothgrips by the hand of the user, a lever from the linkv fulcrumedintermediate its ends on the adjustable frame section and having anonset terminal forming a. channel normally aligned; with the blade, anda rotatably adjustable conneotion' from the blade to the lever adaptedto be locked.

in said channel againstadjustment rotation-as to the bladeby rocking thelever into blade ten sioning holding position as the link throws thelever past dead center position at clasp adjusted relation of thegrip'portions.

CHARLES n CARROLL.

